Improved window-shade



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T. n. JAMES, 0F -MUSGATINE G'1TY.1OWA.

Letters Patent No. 68,751, dated September 10, 1867.

IMPROVE wnimovv*#SHADE TO ALL WHOM 1T MAY CONCERN: t

Be it known that I, T. B. JAMES, of Musea-tine, in the county of Muscatine, and State of Iowa, have invented t new and useful improvement in Window-Shades; and I do hereby declare that the following is ahfull,

clear, and'exact description of the some, reference being had to the annexed drawings, making part of this specification, in wbich Figure 1 is a vertical section, and Figure 2 is a. front elevation. The saine letters are employed i`n both-figures in the indien-tion ofidentical parts. Window-shades have been made of ilatstrips woven together, also of round sticks placed so as to be arranged in double order, one covering the joint between the twoin the opposite row. The single shades a're.

subject to the objection that the spaces between them permit the transmission of horizontal lines of light, while the round sticks, in double arrangement, exclude both light and air. '4

. My improvement consistsin the use of square orlozenge-formed sticks placed iu double order,- and woven together in such manner that while the passage of horizontal rays ispreven ted, light and air may pass through inclined spaces between the sticks. In the annexed drawingsj A A are the sticks, represented as square prisms. These sticks are arranged in two rows, so placedrthat each one shall have one ofV its angles opposite the space between the two Yadjoining sticks in the other row.- The sticks thus disposed are woven together by strings, als-et B. It will'be observed that while horizontal rays are excluded, and it is impossible to see through theblind, both light and heat` may be admitted through the inclined' spaces between the'stioks. i

` What I claim as my invention, and desire to secure by Letters Potent, is,

Constructing window-shades with quadriluteral prismatic sticks A, arranged and woven together substantialiy as set forth. y

In testimony whereof I have signed my name to this specification in the presence of two subscribing witnesses.

T. B. JAMES.

Witnesses JNO. H. MUNnoE, s PLINY F.iY. 

